Ghyrson Starn, Kelermorph, Irenicus's Vile Duplication, and Ghosts of the Innocent

Prerequisites

• Ghyrson Starn, Kelermorph on the battlefield
• Irenicus's Vile Duplication in hand
• Ghosts of the Innocent on the battlefield
• You have a way to deal exactly two or three damage to a permanent or player
• available

Steps

1. Cast Irenicus's Vile Duplication by paying , creating a nonlegendary token copy of Ghyrson Starn
2. Deal exactly two or three damage to a permanent or player, which is reduced to one due to Ghosts of the Innocent
3. Ghyrson Starn and the Ghyrson Starn token each trigger
4. Resolve the Ghyrson Starn trigger, dealing 1 damage to that permanent or player due to Ghosts of the Innocent
5. The Ghyrson Starn token triggers, dealing 1 damage to that permanent or player due to Ghosts of the Innocent
6. Ghyrson Starn triggers, dealing 1 damage to that permanent or player due to Ghosts of the Innocent
7. Repeat from step 5

Results

• Infinite damage to any target